What is the setting of Why I Live at the P.O. by Eudora Welty?

Sister narrates the story of her estrangement from her family from her new 'home' at the China Grove post office, the second smallest post office in the state of Mississippi and the point of connection between the provincial community and a distant outside world. The events that make up the main part of the plot all take place in the family home where Sister has lived all her life with her mother, uncle, and grandfather. Her sister, Stella-Rondo, has gotten away from the insular world China Grove by marrying and going to Illinois. But Sister's only point of reference and only source of identity come from her wacky, strong-willed relatives and the small rural community where their ways are taken for granted. The family is prominent in the town and relatively wealthy. They have black servants to whom they unselfconsciously refer as "niggers," a practice that was not uncommon in the 1930s and 1940s. However, the story does not reflect the racial tensions that were taking place in the South, nor does it reflect broader social and cultural changes connected to rapid urbanization, modernization, the Depression, and the onset of World War II. Instead, the tensions between family members over beards and kimonos take on gigantic proportions within the insular setting of the family home.